I think it would be AWESOME to have some sort of fatality just to humiliate someone as they died. Unloading a bunch of rounds into the back of their head would be so grusome I'm definetly down for that.
Not sure how the tackle is going to work but it definetly sounds like fun
Just as long as it's not like the dagger knockdown in Gunz: the duel. If you have ever played that, its free. You stab someone with your knife and they fall down and can't shoot at you, so you pretty much stab, take out your gun, and blow them away while they just sit their screaming at their moniter.
You can jump out of the little knockdown just jumping right when they hit you, but I don't know if that would be huxleys way of handling it. Maybe a certain button to press so you still get knocked back but not near as bad so you can still fight back.
It might be tough for them to make the tackle useful but not overpowered